std::regex_error::regex_error (3) Linux Manual Page

std::regex_error::regex_error – std::regex_error::regex_error

Synopsis

Defined in header <regex>
regex_error(std::regex_constants::error_type ecode); (since C++11)
Constructs a regex_error with a given ecode of type std::regex_constants::error_type .

See Also

error_type describes different types of matching errors
           (typedef)
(C++11)